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-#.rst:
-# CMakeParseArguments
-# -------------------
-#
-#
-#
-# CMAKE_PARSE_ARGUMENTS(<prefix> <options> <one_value_keywords>
-# <multi_value_keywords> args...)
-#
-# CMAKE_PARSE_ARGUMENTS() is intended to be used in macros or functions
-# for parsing the arguments given to that macro or function. It
-# processes the arguments and defines a set of variables which hold the
-# values of the respective options.
-#
-# The <options> argument contains all options for the respective macro,
-# i.e. keywords which can be used when calling the macro without any
-# value following, like e.g. the OPTIONAL keyword of the install()
-# command.
-#
-# The <one_value_keywords> argument contains all keywords for this macro
-# which are followed by one value, like e.g. DESTINATION keyword of the
-# install() command.
-#
-# The <multi_value_keywords> argument contains all keywords for this
-# macro which can be followed by more than one value, like e.g. the
-# TARGETS or FILES keywords of the install() command.
-#
-# When done, CMAKE_PARSE_ARGUMENTS() will have defined for each of the
-# keywords listed in <options>, <one_value_keywords> and
-# <multi_value_keywords> a variable composed of the given <prefix>
-# followed by "_" and the name of the respective keyword. These
-# variables will then hold the respective value from the argument list.
-# For the <options> keywords this will be TRUE or FALSE.
-#
-# All remaining arguments are collected in a variable
-# <prefix>_UNPARSED_ARGUMENTS, this can be checked afterwards to see
-# whether your macro was called with unrecognized parameters.
-#
-# As an example here a my_install() macro, which takes similar arguments
-# as the real install() command:
-#
-# ::
-#
-# function(MY_INSTALL)
-# set(options OPTIONAL FAST)
-# set(oneValueArgs DESTINATION RENAME)
-# set(multiValueArgs TARGETS CONFIGURATIONS)
-# cmake_parse_arguments(MY_INSTALL "${options}" "${oneValueArgs}"
-# "${multiValueArgs}" ${ARGN} )
-# ...
-#
-#
-#
-# Assume my_install() has been called like this:
-#
-# ::
-#
-# my_install(TARGETS foo bar DESTINATION bin OPTIONAL blub)
-#
-#
-#
-# After the cmake_parse_arguments() call the macro will have set the
-# following variables:
-#
-# ::
-#
-# MY_INSTALL_OPTIONAL = TRUE
-# MY_INSTALL_FAST = FALSE (this option was not used when calling my_install()
-# MY_INSTALL_DESTINATION = "bin"
-# MY_INSTALL_RENAME = "" (was not used)
-# MY_INSTALL_TARGETS = "foo;bar"
-# MY_INSTALL_CONFIGURATIONS = "" (was not used)
-# MY_INSTALL_UNPARSED_ARGUMENTS = "blub" (no value expected after "OPTIONAL"
-#
-#
-#
-# You can then continue and process these variables.
-#
-# Keywords terminate lists of values, e.g. if directly after a
-# one_value_keyword another recognized keyword follows, this is
-# interpreted as the beginning of the new option. E.g.
-# my_install(TARGETS foo DESTINATION OPTIONAL) would result in
-# MY_INSTALL_DESTINATION set to "OPTIONAL", but MY_INSTALL_DESTINATION
-# would be empty and MY_INSTALL_OPTIONAL would be set to TRUE therefor.
-
-#=============================================================================
-# Copyright 2010 Alexander Neundorf <neundorf@kde.org>
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-# License text for the above reference.)
-
-
-if(__CMAKE_PARSE_ARGUMENTS_INCLUDED)
- return()
-endif()
-set(__CMAKE_PARSE_ARGUMENTS_INCLUDED TRUE)
-
-
-function(CMAKE_PARSE_ARGUMENTS prefix _optionNames _singleArgNames _multiArgNames)
- # first set all result variables to empty/FALSE
- foreach(arg_name ${_singleArgNames} ${_multiArgNames})
- set(${prefix}_${arg_name})
- endforeach()
-
- foreach(option ${_optionNames})
- set(${prefix}_${option} FALSE)
- endforeach()
-
- set(${prefix}_UNPARSED_ARGUMENTS)
-
- set(insideValues FALSE)
- set(currentArgName)
-
- # now iterate over all arguments and fill the result variables
- foreach(currentArg ${ARGN})
- list(FIND _optionNames "${currentArg}" optionIndex) # ... then this marks the end of the arguments belonging to this keyword
- list(FIND _singleArgNames "${currentArg}" singleArgIndex) # ... then this marks the end of the arguments belonging to this keyword
- list(FIND _multiArgNames "${currentArg}" multiArgIndex) # ... then this marks the end of the arguments belonging to this keyword
-
- if(${optionIndex} EQUAL -1 AND ${singleArgIndex} EQUAL -1 AND ${multiArgIndex} EQUAL -1)
- if(insideValues)
- if("${insideValues}" STREQUAL "SINGLE")
- set(${prefix}_${currentArgName} ${currentArg})
- set(insideValues FALSE)
- elseif("${insideValues}" STREQUAL "MULTI")
- list(APPEND ${prefix}_${currentArgName} ${currentArg})
- endif()
- else()
- list(APPEND ${prefix}_UNPARSED_ARGUMENTS ${currentArg})
- endif()
- else()
- if(NOT ${optionIndex} EQUAL -1)
- set(${prefix}_${currentArg} TRUE)
- set(insideValues FALSE)
- elseif(NOT ${singleArgIndex} EQUAL -1)
- set(currentArgName ${currentArg})
- set(${prefix}_${currentArgName})
- set(insideValues "SINGLE")
- elseif(NOT ${multiArgIndex} EQUAL -1)
- set(currentArgName ${currentArg})
- set(${prefix}_${currentArgName})
- set(insideValues "MULTI")
- endif()
- endif()
-
- endforeach()
-
- # propagate the result variables to the caller:
- foreach(arg_name ${_singleArgNames} ${_multiArgNames} ${_optionNames})
- set(${prefix}_${arg_name} ${${prefix}_${arg_name}} PARENT_SCOPE)
- endforeach()
- set(${prefix}_UNPARSED_ARGUMENTS ${${prefix}_UNPARSED_ARGUMENTS} PARENT_SCOPE)
-
-endfunction()